GKN Rockford, Inc., through its subsidiaries, designs, manufactures, and markets power train systems and components for off-highway applications. The company offers universal joints, drive shafts, and permanent and neck stub ends; C-type yokes, including brakes, flanges, couplings, end/fittings, slip yokes and assemblies, stubs, and welds; accessories, such as bolts, dust cups, hanger bearings, lock nuts, seals, slingers, slip sleeves, stuffing caps, washers, vents, and relief valves. It also provides fan clutches; and hydraulic products, including power shift clutches, power dividers, and torque converters. In addition, the company offers engineering/test lab services, including performance, endurance, destructive, and environmental testing. Its products are used in construction, agriculture, mining, forestry, military, industrial, recreation, and marine applications. The company offers products through distributors. GKN Rockford, Inc. was formerly known as Rockford Powertrain, Inc. and changed its name in December 1995. The company was founded in 1890 and is based in Loves Park, Illinois. As of August 3, 2006, GKN Rockford, Inc. operates as a subsidiary of GKN plc.

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